What would be dislocation spacing be at the density
Based on inernal energy considerations, what dislocation density in Cu is needed to make the crystalline form of Cu unstable with respect to the liquid form? What would be dislocation spacing be at this density? Comment on your answer.
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If the plant uses 28.7 kg/s of coal as its fuel and coal has a nominal heating value of 32,000 kJ/kg, what is the overall efficiency of the plant (in percent)?
To a closed system we add 28 kJ of heat while its internal energy decreases by 24 kJ. How much work do we gain or perform? (Everything reversible)
The energy generated within the house from people, lights, and appliances amounts to 4,500 kJ/h. For a COP of 2.5, determine the power input to the heat pump in kW.
Cold water (c_p = 4.18 kJ/kg*C) leading to a shower enters a well-insulated, thin walled, double-pipe, counter-flow heat exchanger at 10 C at a rate of 0.95 kg/s and is heated to 70 C by hot water (c_p = 4.19 kJ/kg*C) that enters at 85 C at a rate
The Hall-effect is used to determine the mobility of holes in a p-type silicon. Assume the bar resistivity is 20,000 ohm -cm the magnitude of Bz = 0.1 wb / m2, and d = w = 3 mm The measured value of the current and hall voltage are 100 mu A and 10
Determine (a) the initial and final temperatures, (b) the mass of liquid water when the piston first starts moving, and (c) the work done during this process. Also, (d) show the process on a P-v diagram.
What is the thermal resistance associated with a wall that is 2.5m high by 6.5m wide ( having 10 studs, each 2.5m high)? assume surfaces parallel to the x-direstion are adiabatic.
If a parallel-plate capacitor is disconnected from a battery before the separation between the plates is doubled, what is the ratio of the final stored energy to the initial stored energy?
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